ISRC DEF050702190
Verified recording
DEF050702190 is “Polonaises, Op. 71: 1. Allegro maestoso In D Minor” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xe3794e080a03061fbdf508e29643fd56c8657e82bc8a196fbe76c4a9ce885aec and independently timestamped
in Bitcoin block 960334 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF050702190.
Recording identifiers
- ISRC
- DEF050702190
- Title
- Polonaises, Op. 71: 1. Allegro maestoso In D Minor
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xe3794e080a03061fbdf508e29643fd56c8657e82bc8a196fbe76c4a9ce885aec
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T02:19:15+00:00
- Bitcoin block
- 960334
- Canonical record hash
sha256:c1ae84cb6b5617838c48f81485ca6812729f5418d4e9ae1cf4b2fb4d0a1a5440- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF050702190
- Bitcoin block existence check
- https://blockstream.info/api/block/960334
Full record
Track page: Polonaises, Op. 71: 1. Allegro maestoso In D Minor · Machine-readable JSON-LD